CN101446626B - Magnetic field generating device for low-temperature probe station - Google Patents
Magnetic field generating device for low-temperature probe station Download PDFInfo
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- CN101446626B CN101446626B CN2008102398836A CN200810239883A CN101446626B CN 101446626 B CN101446626 B CN 101446626B CN 2008102398836 A CN2008102398836 A CN 2008102398836A CN 200810239883 A CN200810239883 A CN 200810239883A CN 101446626 B CN101446626 B CN 101446626B
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- magnetic field
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- generation device
- field generation
- probe platform
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- 239000000523 sample Substances 0.000 title claims abstract description 49
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 230000000295 complement effect Effects 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002070 nanowire Substances 0.000 description 1
- 239000002096 quantum dot Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
Abstract
The invention relates to a magnetic field generating device used in a low-temperature probe station. In order to overcome the defects of large volume and difficult carrying in the existing test equipment, the invention provides a magnetic field generating device for a low-temperature probe station, which comprises a bottom support, a sample support and a permanent magnet, wherein two parallel screw rods are arranged above the bottom support, and slide rods capable of sliding along the screw rods are arranged on the two screw rods; the permanent magnets are oppositely arranged above the bottom support and are respectively fixed on the bottom support below one end of the screw rod and the middle part of the slide rod through iron rings; the sample support is arranged on the bottom support in the middle of the permanent magnet. The invention can adjust the magnetic field intensity and the magnetic field direction of the sample, has small volume, simple structure, convenient carrying and easy operation, can be seamlessly compatible with the low-temperature probe station, and can be suitable for various environments with small volume requiring magnetic field, in particular to a high-vacuum low-temperature cavity of the low-temperature probe station.
Description
Technical field
The present invention relates to a kind of equipment that produces parallel magnetic field, be specifically related to a kind of magnetic field generation device that is used for cold probe platform.
Background technology
Since over half a century, be that the SIC (semiconductor integrated circuit) of mainstream technology is being followed " Moore's Law " always and developed rapidly with CMOS, therefore its characteristic dimension has entered into nanoscale, becomes the focus of research based on the nano electron device of new material, new principle such as various quantum dot device, nano wire, nanometer tube device, single-electron device etc.And in the sign to these quantum devices, its low-temperature characteristics and the characteristic in magnetic field become a kind of characterization method commonly used.
But in traditional testing apparatus, low-temperature characteristics and magnetic signature seldom can be finished simultaneously.The device that some can be finished simultaneously also because it produces shortcomings such as the device volume in magnetic field is very much not portable, makes that the magnetic characteristic test under the low temperature condition is never well popularized.
Summary of the invention
In order to overcome above-mentioned defective, the invention provides a kind of magnetic field generation device that is used for cold probe platform, can regulate magnetic direction and size easily, and its volume is little, can be placed in the test cavity of cold probe platform.
In order to achieve the above object, the technical solution used in the present invention is: a kind of magnetic field generation device that is used for cold probe platform, its special character is: comprise collet, sample holder and permanent magnet, described collet top is provided with two parallel screws, and two screw rods are provided with the slide bar that can slide along screw rod; Described permanent magnet opposition is arranged on the collet top, is separately fixed on the collet of screw rod one end below by iron ring and the slide bar middle part; Described sample holder is arranged on the middle collet of permanent magnet.
Above-mentioned collet both sides are provided with linking arm, and linking arm carries the sample that collet is fixed on probe station on the platform.
Above-mentioned screw rod is fixed on the collet by support column.
Above-mentioned slide bar two ends are provided with sleeve, can slide on screw rod.
Be respectively equipped with two nuts that are complementary with screw flight on the above-mentioned screw rod, two nuts are arranged at the two ends of slide bar sleeve.
Above-mentioned sample holder is connected with collet by screw, and 180 degree free to rotate.
The material of above-mentioned collet, linking arm, screw rod, support column, sample holder and slide bar is red copper.
Compared with prior art, the beneficial effect of technical solution of the present invention generation is as follows:
1, the present invention utilizes slide bar to regulate distance between the permanent magnet, reaches the purpose of regulating magnetic field intensity; The present invention regulates the angle of sample in the magnetic line of force by the rotary sample holder, thereby changes the residing magnetic direction of sample.
2, the present invention makes that by the ingenious connection between each part the volume of whole device is very little, and is simple in structure, is easy to carry, easy operating, can with the seamless compatibility of cold probe platform, go in the environment of the various little volumes that need magnetic field, particularly in the high vacuum low temperature cavity of cold probe platform.
Description of drawings
Fig. 1 is an one-piece construction synoptic diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments technical scheme of the present invention is elaborated.
As shown in Figure 1, the present invention is a kind of magnetic field generation device that is used for cold probe platform, comprises collet 1, sample holder 6 and permanent magnet 8, and the sample that the linking arm 2 that collet 1 is provided with by its both sides is fixed on cold probe platform carries on the platform.
Two parallel screws 3 of collet of the present invention 1 top are supported on the collet 1 by four support columns 4, and the two ends of support column 4 all are connected with screw rod 3 with collet 1 by screw thread.Two screw rods 3 are provided with the slide bar 7 that can slide along screw rod, and slide bar 7 slides on screw rod 3 by the sleeve at its two ends, and its position is definite by four nuts 9.
Be respectively equipped with two nuts 9 that are complementary with screw flight on two screw rods 3 of the present invention, four nuts 9 are arranged at the two ends of slide bar sleeve, clamp sleeve, making slide bar 7 drive iron ring 5 fixed thereon can freely slide accurately, regulate the spacing between two permanent magnets, thereby regulate the residing magnetic field intensity of sample.
The material of collet 1, linking arm 2, screw rod 3, support column 4, sample holder 6 and slide bar 7 is red copper among the present invention, makes that the temperature of cold probe platform can be synchronous with the temperature of sample holder.
The present invention not only can provide high relatively parallel magnetic field, and can regulate magnetic direction and size easily, and, can be placed in the test cavity of cold probe platform, thereby also can under the environment of utmost point low temperature, finish the test sign work of device because its volume is little.
Above-described specific embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. magnetic field generation device that is used for cold probe platform is characterized in that: comprise collet, sample holder and permanent magnet, described collet top is provided with two parallel screws, and two screw rods are provided with the slide bar that can slide along screw rod; Described permanent magnet opposition is arranged on the collet top, is separately fixed on the collet of screw rod one end below by iron ring and the slide bar middle part; Described sample holder is arranged on the middle collet of permanent magnet.
2. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 1 is characterized in that: described collet both sides are provided with linking arm.
3. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 1, it is characterized in that: described screw rod is fixed on the collet by support column.
4. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 1 is characterized in that: described slide bar two ends are provided with sleeve, can slide on screw rod.
5. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 4 is characterized in that: be respectively equipped with two nuts that are complementary with screw flight on described two screw rods, two nuts are arranged at the two ends of slide bar sleeve.
6. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 1 is characterized in that: described sample holder is connected with collet by screw, and 180 degree free to rotate.
7. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 1 is characterized in that: the material of described collet, screw rod, sample holder and slide bar is red copper.
8. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 2 is characterized in that: the material of described linking arm is a red copper.
9. a kind of magnetic field generation device that is used for cold probe platform as claimed in claim 3 is characterized in that: the material of described support column is a red copper.
10. a kind of magnetic field generation device that is used for cold probe platform according to claim 1, gas is characterised in that: described permanent magnet should seamlessly place in the iron ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102398836A CN101446626B (en) | 2008-12-19 | 2008-12-19 | Magnetic field generating device for low-temperature probe station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102398836A CN101446626B (en) | 2008-12-19 | 2008-12-19 | Magnetic field generating device for low-temperature probe station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101446626A CN101446626A (en) | 2009-06-03 |
| CN101446626B true CN101446626B (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008102398836A Active CN101446626B (en) | 2008-12-19 | 2008-12-19 | Magnetic field generating device for low-temperature probe station |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104344845B (en) * | 2014-10-27 | 2016-08-24 | 北京航空航天大学 | A kind of magnetic field method for generation for giant magnetoresistance sensor dynamic characteristic test |
| CN110736501A (en) * | 2019-10-12 | 2020-01-31 | 致真精密仪器(青岛)有限公司 | magnetic field probe station |
| CN112466594B (en) * | 2020-09-04 | 2022-02-08 | 北京大学 | Electric control vector magnetic field device and installation method thereof |
| CN113341196A (en) * | 2021-04-13 | 2021-09-03 | 电子科技大学 | High-flux micro-area electrical property detection system and method based on Van der pol method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093912A (en) * | 1976-09-20 | 1978-06-06 | International Business Machines Corporation | NMR magnet assembly with pole face parallelism adjustment |
| CN2588368Y (en) * | 2002-12-12 | 2003-11-26 | 栾材宝 | Rareearth permanent magnet type nuclear magnetic resonance massspectrometer magnetic filed device |
-
2008
- 2008-12-19 CN CN2008102398836A patent/CN101446626B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4093912A (en) * | 1976-09-20 | 1978-06-06 | International Business Machines Corporation | NMR magnet assembly with pole face parallelism adjustment |
| CN2588368Y (en) * | 2002-12-12 | 2003-11-26 | 栾材宝 | Rareearth permanent magnet type nuclear magnetic resonance massspectrometer magnetic filed device |
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| CN101446626A (en) | 2009-06-03 |
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Effective date of registration: 20220303 Address after: 100029 room 328, building 15, 3 Beitucheng West Road, Chaoyang District, Beijing Patentee after: Beijing Zhongke micro Investment Management Co.,Ltd. Address before: 100029 Beijing city Chaoyang District Beitucheng West Road No. 3 Institute of Microelectronics Patentee before: Institute of Microelectronics of the Chinese Academy of Sciences |
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